Παραπομπή σε μορφή APA (7η εκδ.)

Barnes, J. G. (2001). Secrets of customer relationship management: It's all about how you make them feel (1a. ed.). McGraw-Hill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Barnes, James G. Secrets of Customer Relationship Management: It's All About How You Make Them Feel. 1a. ed. Nueva York: McGraw-Hill, 2001.

Παραπομπή σε μορφή MLA (9th εκδ.)

Barnes, James G. Secrets of Customer Relationship Management: It's All About How You Make Them Feel. 1a. ed. McGraw-Hill, 2001.